I need a 15" replacement spkr for a MESA 1x15 cabinet. I did a search for Eminence and EV, and have got myself even more confused reading old posts for the last 2 hours. I am looking for a classic 70s vintage sound. Nice and round on the bottom. The power is from a MESA Walkabout 300w head. The cabinet is ported. 8 ohms please. I see good comments on the Eminence Legend CB158, Pro 15A, the Delta 15S, and the Kappa 15A. What is the difference? Also, the EVM 15B and 15L are contenders. But again, I haven't found a thread that 'breaks it all down'. I have a credit card in my hand, but not sure which way to go? Help!